JavaScript object.hasOwnProperty（proName）vs lodash _.has（obj，proName）函数

Question

I'm debating between using JavaScript Object.hasOwnProperty(propName) and lodash _.has(obj, proName) function to determine if an object has a property.

Which is more efficient for simple cases? For complex cases? For all cases?

Is there a better library that I haven't mentioned?

Thanks!

Answer 1

Well the Lodash _.has() method is just a call to Object.prototype.hasOwnProperty() after a check for a null argument. The code grabs a reference early on:

var hasOwnProperty = Object.prototype.hasOwnProperty;

and then _.has(object, prop) looks like

return object != null && hasOwnProperty.call(object, prop);